Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a shell, a plurality of battery monomers and a smoke exhaust assembly, the shell is provided with an accommodating cavity, and one side of the accommodating cavity along a first direction is provided with an opening; the plurality of single batteries are arranged in the accommodating cavity along a second direction, the first direction is the length direction of the shell 3, each single battery is provided with a pressure relief mechanism, and the second direction is perpendicular to the first direction; the smoke exhaust assembly is arranged at the opening of the containing cavity, the smoke exhaust assembly comprises a shell, a smoke exhaust channel and a plurality of sub-channels, the smoke exhaust channel and the sub-channels are arranged on the shell, the sub-channels correspond to the pressure relief mechanisms of the battery monomers, the sub-channels communicate with the smoke exhaust channel, and one end of the smoke exhaust channel penetrates through the shell and is arranged to be a smoke exhaust port. The battery device realizes directional exhaust of smoke, the smoke exhaust direction is controllable, and the risk that the smoke enters a cab from systems such as an air conditioner is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery device and an electric equipment. BACKGROUND

[0002] The battery device comprises a battery module, the battery module comprises a shell, the shell is provided with a containing cavity, a plurality of battery monomers are arranged in the containing cavity, each battery monomer is provided with a pressure relief mechanism, a plurality of air outlets are arranged on the shell and correspond to the positions of the pressure relief mechanisms, and a plurality of flow channels corresponding to the pressure relief mechanisms are arranged in the shell. In this way, the flue gas discharged by each pressure relief mechanism flows through each flow channel and is discharged from the plurality of air outlets, so that the flue gas discharge direction is uncontrollable, and the flue gas may enter the passenger cabin. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery device and an electric equipment, which aims to at least improve the technical problem that the flue gas discharge direction of the battery device is uncontrollable.

[0004] According to some embodiments of the present application, the present application provides a battery device, comprising a shell, a plurality of battery monomers and a flue gas discharge assembly, the shell is provided with a containing cavity, the containing cavity has an opening on one side along a first direction; a plurality of battery monomers are arranged in the containing cavity along a second direction, the first direction is the length direction of the shell, the battery monomers are provided with pressure relief mechanisms, and the second direction is perpendicular to the first direction; the flue gas discharge assembly is arranged at the opening of the containing cavity, the flue gas discharge assembly comprises an outer shell, a flue gas discharge channel arranged in the outer shell and a plurality of sub-channels, the plurality of sub-channels are arranged one by one corresponding to the pressure relief mechanisms of the plurality of battery monomers, the plurality of sub-channels are respectively communicated with the flue gas discharge channel, and one end of the flue gas discharge channel is arranged as a flue gas discharge port through the outer shell.

[0005] The flue gas discharge assembly comprises the flue gas discharge channel arranged in the outer shell and the plurality of sub-channels, the sub-channels are arranged corresponding to the pressure relief mechanisms, the plurality of sub-channels are respectively communicated with the flue gas discharge channel, and one end of the flue gas discharge channel is arranged as the flue gas discharge port through the outer shell. Each sub-channel collects the flue gas discharged by each battery cell pressure relief mechanism, and the flue gas received by each sub-channel flows into the flue gas discharge channel communicated with each sub-channel. The flue gas discharge channel can collect the flue gas discharged by each pressure relief mechanism together, and finally discharge from the flue gas discharge port, so that the flue gas is discharged in a directional manner, the flue gas discharge direction is controllable, and the risk of the flue gas entering the cab from the air conditioning system and the like is reduced.

[0006] In some embodiments, the cross-sectional area of the flue gas discharge channel is greater than the cross-sectional area of each sub-channel; the cross-sectional area is the area of a section perpendicular to the fluid flow direction.

[0007] By setting the cross-sectional area of the smoke exhaust channel larger than that of each sub-channel along the flow direction of the flue gas, the resistance of the flue gas flowing into the smoke exhaust channel can be reduced, and the flue gas emission efficiency can be improved; at the same time, the risk of flue gas backflow can be reduced.

[0008] In some embodiments, the smoke exhaust assembly includes a partition and a smoke exhaust member, the partition is installed on the side of the battery monomer facing the opening, the partition is provided with the sub-channel corresponding to the position of the pressure relief mechanism, the smoke exhaust channel includes a first smoke exhaust sub-channel and a second smoke exhaust sub-channel in communication with each other; the smoke exhaust member is arranged on the side of the partition away from the battery monomer, the partition and the smoke exhaust member cooperate to form the first smoke exhaust sub-channel, and the smoke exhaust member is provided with the second smoke exhaust sub-channel; the first smoke exhaust sub-channel is in communication with a plurality of sub-channels respectively, and the two ends of the second smoke exhaust sub-channel are in communication with the first smoke exhaust sub-channel and the smoke exhaust port respectively.

[0009] By improving the structure of the original partition of the battery device and cooperating with the smoke exhaust member to form the sub-channel and the first smoke exhaust sub-channel, the directional smoke exhaust function required by the present application can be realized without adding too many components, which is beneficial to reduce the manufacturing cost and reduce the volume of the battery device.

[0010] In some embodiments, the first smoke exhaust sub-channel includes a first passage section and a second passage section, the two ends of the second passage section are in communication with the first passage section and the second smoke exhaust sub-channel respectively, and the cross-sectional area of the second passage section shows an increasing trend from the first passage section to the second smoke exhaust sub-channel.

[0011] By setting the cross-sectional area of the second passage section to show an increasing trend from the first passage section to the second smoke exhaust sub-channel, the rate of flue gas flowing into the second smoke exhaust sub-channel can be improved, and the smoke exhaust efficiency can be improved.

[0012] In some embodiments, the shell includes two end plates, the two end plates are arranged on both sides of the plurality of battery monomers along the first direction, and the two end plates are respectively provided with a first connecting position; a partition is arranged between adjacent two battery monomers, the side of the partition facing the smoke exhaust member is provided with a second connecting position, and the two ends of the smoke exhaust member are respectively installed on the two first connecting positions, and the middle part of the smoke exhaust member is installed on the second connecting position.

[0013] By setting the fixing positions at both ends and the middle part of the smoke exhaust member, and respectively fixing and connecting the smoke exhaust member through the end plate and the partition, the risk of the smoke exhaust member being raised can be reduced, the surface of the smoke exhaust member is more flat, and the occupation of space can be reduced.

[0014] In some embodiments, a plurality of connecting seats arranged along a second direction are arranged along the smoke exhaust member, the number of the partitions is a plurality, each of the partitions is provided with the second connecting position, the connecting seats and the second connecting positions are equal in number and arranged one-to-one, and the connecting seats and the second connecting positions are connected to mount the smoke exhaust member on the partitions.

[0015] By arranging the second connecting positions on the partitions and arranging the connecting seats along the length direction of the smoke exhaust member, the connecting seats and the second connecting positions are connected one-to-one, the smoke exhaust member can be fixed and mounted from a plurality of positions along the length direction of the smoke exhaust member, and the risk of bending or lifting of the smoke exhaust member is further reduced.

[0016] In some embodiments, each of the connecting seats includes two connecting sub-seats, the two connecting sub-seats in each of the connecting seats are arranged on two sides of the smoke exhaust member along a third direction, the second connecting position includes two second connecting sub-positions, each of the connecting sub-seats and each of the second connecting sub-positions are arranged one-to-one, the second direction is perpendicular to the third direction, the first connecting hole is arranged on the connecting sub-seat, the second connecting hole is arranged on the second connecting sub-position, and the battery device further includes a fastener, the fastener passes through the first connecting hole and the second connecting hole to connect the connecting sub-seat and the second connecting sub-position, so as to mount the smoke exhaust member on the partition.

[0017] By correspondingly arranging a pair of connecting sub-seats on two sides of the smoke exhaust member along the width direction, and mounting each of the connecting sub-seats on the corresponding second connecting sub-position of the partition by the fastener, the force on the smoke exhaust member is evenly distributed, and the risk of lifting the smoke exhaust member to one side is reduced.

[0018] In some embodiments, a groove is arranged on a side of the smoke exhaust member facing the battery monomer, the groove includes a groove bottom wall and two groove side walls arranged on two sides of the groove bottom wall, the partition is provided with two clamping grooves corresponding to the positions of the two groove side walls, and the clamping grooves are clamped and matched with the groove side walls, respectively.

[0019] By arranging the two clamping grooves corresponding to the positions of the two groove side walls in the partition, and clamping and matching the clamping grooves with the groove side walls, respectively, the groove and the partition are matched to form the smoke exhaust channel, and the mounting and dismounting of the smoke exhaust member and the partition are facilitated.

[0020] In some embodiments, sealing glue is further arranged in the clamping groove, and the sealing glue fills the gap between the clamping groove and the groove side wall.

[0021] By arranging the sealing glue in the clamping groove, the gap between the clamping groove and the groove side wall can be filled, and the leakage of flue gas is reduced.

[0022] In some embodiments, the clamping groove and the groove sidewall both extend along the first direction.

[0023] By setting the clamping groove and the groove sidewall both extending along the first direction, the clamping fit can be achieved in the largest possible range, the flue gas is not easy to leak from the clamping part, and the sealing performance is improved.

[0024] In some embodiments, the side of the smoke exhaust part away from the containing cavity is provided with a wire passing groove, and the bottom wall of the wire passing groove is provided with a rib along the extension direction of the wire passing groove, which divides the wire passing groove into a first wire groove and a second wire groove.

[0025] By setting the wire passing groove, a position can be provided for the installation of the wire harness, and by dividing the wire passing groove into at least two by the rib, the classification and arrangement of different wire harnesses can be achieved, and the reinforcing effect can also be achieved.

[0026] In some embodiments, one side of the relief part provided with a pressure relief mechanism is provided with a gap; the gap is arranged on the flow path of the sub-channel, and the battery device is further provided with a sealing member for filling the gap.

[0027] By setting the sealing member for filling the gap between the battery monomer and the relief part, the risk of flue gas leakage can be reduced.

[0028] The above description is only a summary of the technical solutions of the present application, in order to more clearly understand the technical means of the present application, the content of the specification can be implemented, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating any creative labor.

[0030] Figure 1 The structure schematic diagram of the vehicle of some embodiments of the present application;

[0031] Figure 2 The exploded structure schematic diagram of the battery of some embodiments of the present application;

[0032] Figure 3 The three-dimensional structure schematic diagram of the battery module of some embodiments of the present application;

[0033] Figure 4A perspective view of a structure of a battery module according to some embodiments of the present application;

[0034] Figure 5 A cross-sectional view of a structure of Figure 4

[0035] Figure 6 A partial view of a structure of Figure 5

[0036] Figure 7 An enlarged view of a structure at A; Figure 5

[0037] Figure 8 An enlarged view of a structure at B; Figure 5

[0038] Figure 9 A perspective view of a structure of a battery module according to some embodiments of the present application;

[0039] Figure 10 A cross-sectional view of a structure at H-H; Figure 9

[0040] Figure 11 A perspective view of a structure of a smoke discharging member of a battery module according to some embodiments of the present application;

[0041] Figure 12 An enlarged view of a structure at C; Figure 11

[0042] A cross-sectional view of a structure at L-L; Figure 13 Figure 9 An enlarged view of a structure at D.

[0043] Figure 14 Figure 13

[0044] Explanation of reference numerals:

[0045] 1000: vehicle

[0046] 100: battery device; 200: controller; 300: motor

[0047] 10: case; 11: upper cover; 12: case body

[0048] 20: battery module

[0049] ​​​​​​​​1, accommodating cavity; 2, battery cell; 21, pressure relief mechanism; 3, shell; 31, end plate; 4, smoke exhaust assembly; 41, smoke exhaust piece; 42, isolation piece; 421, clamping groove; 43, sub-passage; 44, smoke exhaust passage; 441, first smoke exhaust sub-passage; 4411, first passage section; 4412, second passage section; 442, second smoke exhaust sub-passage; 45, smoke exhaust opening; 46, first connecting position; 47, connecting seat; 471, connecting sub-seat; 48, groove side wall; 49, wire groove; 491, first wire groove; 492, second wire groove; 401, rib; 402, mounting position; 5, partition plate; 51, second connecting position; 511, second connecting sub-position; 6, fastener; 7, sealant; 8, sealing piece; 9, locking piece.

[0050] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0052] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0053] In addition, the description such as "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0054] In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0055] In addition, the technical solutions among various embodiments of the present application can be combined with each other, but the combination of the technical solutions should be considered not to exist and not within the protection scope of the present application on the basis that the combination of the technical solutions can be realized by the ordinary skilled in the art, and the combination of the technical solutions cannot be realized. It should be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application.

[0056] The directions such as "upper", "lower", "front", "rear", "left", "right" and the like in the present application are described based on the directions shown in the drawings, and are only used to explain the relative positional relationship between the components in the posture shown in the drawings. If the specific posture changes, the directional indications also change accordingly.

[0057] At present, from the development of market situation, the application of power battery is more and more widely. The power battery is not only applied to the energy storage power supply system of hydroelectric, thermal, wind and solar power station, but also widely applied to electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, military equipment, aerospace and other fields. With the continuous expansion of the application field of power battery, the demand of its market is also increasing.

[0058] In the related art, the battery device includes a shell, the shell is provided with a containing cavity, a plurality of battery monomers are arranged in the containing cavity, a pressure relief mechanism is arranged on each battery monomer, a plurality of gas outlets are arranged on the shell corresponding to the positions of each pressure relief mechanism, and a plurality of flow channels corresponding to the pressure relief mechanisms are arranged in the shell. In this way, the flue gas discharged by each pressure relief mechanism will pass through each flow channel and be discharged from the plurality of gas outlets, so that the direction of flue gas discharge is uncontrollable.

[0059] The applicant found that for some vehicles, there is a situation of entering smoke into the cab.

[0060] The applicant found through careful research that for vehicles equipped with battery devices, in the related art, the battery is installed on the chassis of the vehicle, and the battery device is installed under the seat. For these two ways, the discharged flue gas generally flows directly into the atmosphere, and the feeling in the cab is not obvious. However, in order to meet the diversified needs of users, there are also battery devices installed in the engine cover at the front of the vehicle at present. For this type of vehicle, the feeling of flue gas in the cab is more obvious.

[0061] The applicant found through careful research that the front of the automobile is also provided with a filtering system such as air conditioner. If the flue gas discharged from each gas outlet of the battery device stays in the front of the automobile, the flue gas will be absorbed and discharged into the cab during the opening of the air conditioner, causing the flue gas to diffuse in the cab and causing discomfort to the people in the vehicle.

[0062] To this end, the applicant provides a battery device, comprising a shell, a plurality of battery monomers and a smoke exhaust assembly, the shell is provided with a containing cavity, the containing cavity has an opening on one side along a first direction; the plurality of battery monomers are arranged in the containing cavity along a second direction, the battery monomers are provided with pressure relief mechanisms, and the second direction is perpendicular to the first direction; the smoke exhaust assembly is arranged at the opening of the containing cavity, and the smoke exhaust assembly comprises a shell, a smoke exhaust channel arranged in the shell and a plurality of sub-channels, the plurality of sub-channels are arranged one by one corresponding to the pressure relief mechanisms of the plurality of battery monomers, the plurality of sub-channels are respectively communicated with the smoke exhaust channel, and one end of the smoke exhaust channel is arranged as a smoke exhaust port through the shell. The smoke exhaust assembly can collect the smoke exhaust by the pressure relief mechanisms of each battery monomer through each sub-channel, and the smoke exhaust received by each sub-channel can flow into the smoke exhaust channel communicated with each sub-channel, which is equivalent to the smoke exhaust channel collecting the smoke exhaust of each pressure relief mechanism together, and finally discharging the battery module or the battery device from the smoke exhaust port, realizing directional discharge of the smoke exhaust, and the smoke exhaust direction is controllable, reducing the risk of smoke exhaust from the air conditioner and the like into the cab.

[0063] Please refer to Figure 1 , Figure 1 A structural schematic diagram of a vehicle 1000 is provided for some embodiments of the present application. The electric device can be the vehicle 1000, and the vehicle 1000 can be a fuel automobile, a gas automobile or a new energy automobile, which can be a pure electric automobile, a hybrid automobile or a range extended automobile. The vehicle 1000 is internally provided with a battery device 100, which can be arranged at the bottom, the head or the tail of the vehicle 1000. The battery device 100 can be used for power supply of the vehicle 1000, for example, the battery device 100 can be used as an operating power supply of the vehicle 1000. The vehicle 1000 can further include a controller 200 and a motor 300, and the controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the working power demand of the vehicle 1000 during starting, navigation and driving.

[0064] In some embodiments of the present application, the battery device 100 can not only be used as an operating power supply of the vehicle 1000, but also be used as a driving power supply of the vehicle 1000, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 1000.

[0065] Please refer to Figure 2 , Figure 2A schematic diagram of an exploded view of a battery device 100 is provided for some embodiments of the present application. The battery device 100 includes a case 10 and battery cells 2, which are accommodated in the case 10. The case 10 is configured to provide a space for accommodating the battery cells 2, and can have various configurations. In some embodiments, the case 10 can include an upper cover 11 and a case body 12, which are coupled to each other to define a space for accommodating the battery cells 2. The case body 12 can have a hollow structure with an open end, and the upper cover 11 can have a plate-like structure to cover the open end of the case body 12. Alternatively, the case body 12 and the upper cover 11 can each have a hollow structure with an open end, and the open end of the upper cover 11 can be coupled to the open end of the case body 12. Of course, the case 10 formed by the upper cover 11 and the case body 12 can have various shapes, such as a cylindrical shape or a cuboid shape.

[0066] The battery device 100 mentioned in the embodiments of the present application can include one or more battery cell assemblies to provide voltage and capacity. The battery cell assembly can include a plurality of battery cells 2 connected in series, in parallel, or in a mixed connection through a busbar.

[0067] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells 2.

[0068] As an example, the battery cell assembly can be a battery module 20 formed by arranging and fixing a plurality of battery cells 2 into a single module. As an example, the battery module 20 can be formed by bundling a plurality of battery cells 2 with a cable tie.

[0069] In some embodiments, the battery device 100 can be a battery pack including a case 10 and one or more battery cell assemblies accommodated in the case 10.

[0070] As an example, the battery cell assembly can be a battery module 20, and the battery cell assembly can be accommodated in the case 10 by fixing the battery module 20 in the case 10.

[0071] As an example, the battery cell assembly can also be accommodated in the case 10 by directly fixing a plurality of battery cells 2 in the case 10.

[0072] In the battery device 100, the battery cells 2 can be multiple, and the multiple battery cells 2 can be connected in series, in parallel, or in a mixed manner. The mixed manner means that the multiple battery cells 2 are connected in series and in parallel. The multiple battery cells 2 can be directly connected in series, in parallel, or in a mixed manner, and then the multiple battery cells 2 are accommodated in the box 10. Of course, the battery device 100 can also be that the multiple battery cells 2 are first connected in series, in parallel, or in a mixed manner to form a battery module, and then the multiple battery modules are connected in series, in parallel, or in a mixed manner to form a whole and are accommodated in the box 10. The battery device 100 can also include other structures, for example, the battery device 100 can also include a current collecting component for realizing the electrical connection between the multiple battery cells 2.

[0073] Each battery cell 2 can be a secondary battery or a primary battery, and can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 2 can be in the shape of a cylinder, a flat body, a cuboid, or other shapes.

[0074] Reference Figures 2-6 According to some embodiments of the present application, the present application provides a battery device 100, which includes a shell 3, multiple battery cells 2, and a smoke exhaust assembly 4. The shell 3 is provided with an accommodation cavity 1, and the accommodation cavity 1 has an opening on one side along a first direction. The multiple battery cells 2 are arranged in the accommodation cavity 1 along a second direction, and the battery cells 2 are provided with a pressure relief mechanism 21. The smoke exhaust assembly 4 is arranged at the opening of the accommodation cavity 1, and the smoke exhaust assembly 4 includes an outer shell, a smoke exhaust passage 44 arranged in the outer shell, and multiple sub-passages 43. The multiple sub-passages 43 are arranged one by one corresponding to the pressure relief mechanisms 21 of the multiple battery cells 2, the multiple sub-passages 43 are respectively communicated with the smoke exhaust passage 44, and one end of the smoke exhaust passage 44 is arranged as a smoke exhaust port 45 through the outer shell.

[0075] The first direction is the direction indicated by Z in Figure 3 , and the second direction is the direction indicated by X in Figure 3 , that is, the length direction of the shell 3. It should be noted that the direction indicated by X in other drawings of the present application is the second direction, and the pressure relief mechanism 21 can be an explosion-proof valve. In some embodiments, the shell 3 is a box 10 of the battery device 100, and the multiple battery cells 2 are directly arranged in the shell 3. In other embodiments, the battery device 100 includes a box 10, and the multiple battery modules 20 are arranged in the box 10. The multiple battery modules 20 can be arranged in a horizontal row, a vertical row, or a horizontal and vertical array in the box 10, and the shell 3 can be a shell 3 of the battery module 20. The battery cell 2 is also called an electrode group, and the multiple battery cells 2 are arranged in the accommodation cavity 1 of the shell 3 along the second direction. The shell 3 is provided with an opening communicated with the accommodation cavity 1, and the smoke exhaust assembly 4 is arranged at the opening. Generally, the side of the battery cell 2 provided with the pressure relief mechanism 21 is arranged towards the opening. Reference Figure 6The smoke exhaust assembly 4 comprises a shell, a smoke exhaust channel 44 and a plurality of sub-channels 43 arranged in the shell. The smoke exhaust channel 44 and the sub-channels 43 are configured to allow the flow of smoke. Specifically, the sub-channels 43 are arranged corresponding to the pressure relief mechanisms 21, so that when the pressure relief mechanisms 21 open the exhaust, the exhaust gas can enter the sub-channels 43, then from the sub-channels 43 into the smoke exhaust channel 44, and finally from the smoke exhaust port 45 of the smoke exhaust channel 44. Since the number of battery monomers 2 is multiple, the number of sub-channels 43 is also multiple, and the smoke collected by the multiple sub-channels 43 is concentrated into the smoke exhaust channel 44. The number of smoke exhaust channels 44 can be one, and the smoke exhaust channel 44 is formed with a smoke exhaust port 45 on the shell. The smoke exhaust port 45 can be arranged near the outside of the vehicle 1000 to reduce the risk of smoke being absorbed by the air conditioning system of the vehicle 1000. Alternatively, the smoke exhaust port 45 is in communication with the pipeline of the vehicle 1000 to exhaust the smoke, achieving directional exhaust of the smoke.

[0076] By arranging the smoke exhaust assembly 4 to comprise the smoke exhaust channel 44 and the plurality of sub-channels 43, the sub-channels 43 are arranged corresponding to the pressure relief mechanisms 21, and the plurality of sub-channels 43 are in communication with the smoke exhaust channel 44. One end of the smoke exhaust channel 44 penetrates the shell to form the smoke exhaust port 45. Each sub-channel 43 collects the smoke exhausted by the pressure relief mechanism 21 of each battery monomer, and the smoke received by each sub-channel 43 flows into the smoke exhaust channel 44 in communication with each sub-channel 43. The smoke exhaust channel 44 can collect the smoke exhausted by each pressure relief mechanism 21 together, and finally exhaust the smoke out of the battery module 20 or the battery device 100 from the smoke exhaust port 45, achieving directional exhaust of the smoke, and the exhaust direction is controllable, reducing the risk of smoke entering the cab from the air conditioning system.

[0077] Referring to Figures 6-8 In some embodiments, the cross-sectional area of the smoke exhaust channel 44 is greater than the cross-sectional area of each sub-channel 43. The cross-sectional area is the area of the section perpendicular to the flow direction of the fluid.

[0078] Here, the fluid can refer to the smoke exhausted from the pressure relief mechanism 21, and the flow direction of the smoke in each channel is as shown by the arrows in the figure. Figures 6-8The arrows in the middle show the flow direction of the smoke. Generally, each sub-channel 43 corresponds to a pressure relief mechanism 21 setting, and the smoke passing through is relatively small, while the exhaust channel 44 needs to collect the smoke of all sub-channels 43, and the smoke flowing through is relatively large. Therefore, the cross-sectional area of the exhaust channel 44 needs to be set larger, which can facilitate smoke exhaust. In order to make the smoke flow quickly to the exhaust channel 44 and not flow back to the pressure relief mechanism 21, the cross-sectional area of the exhaust channel 44 is designed to be larger, reducing the resistance of the smoke flowing to the exhaust channel 44. The flow direction of the fluid here, that is, the flow direction of the smoke in the sub-channel 43 and the exhaust channel 44, can refer to the following figure for details Figures 6-8 The arrows in the middle show the flow direction of the smoke. Generally, each sub-channel 43 corresponds to a pressure relief mechanism 21 setting, and the smoke passing through is relatively small, while the exhaust channel 44 needs to collect the smoke of all sub-channels 43, and the smoke flowing through is relatively large. Therefore, the cross-sectional area of the exhaust channel 44 needs to be set larger, which can facilitate smoke exhaust. In order to make the smoke flow quickly to the exhaust channel 44 and not flow back to the pressure relief mechanism 21, the cross-sectional area of the exhaust channel 44 is designed to be larger, reducing the resistance of the smoke flowing to the exhaust channel 44. The flow direction of the fluid here, that is, the flow direction of the smoke in the sub-channel 43 and the exhaust channel 44, can refer to the following figure for details

[0079] By setting the cross-sectional area of the exhaust channel 44 larger than that of each sub-channel 43 along the flow direction of the smoke, the resistance of the smoke flowing to the exhaust channel 44 can be reduced, and the exhaust efficiency of the smoke can be improved; at the same time, the risk of smoke backflow can be reduced.

[0080] Referring to Figures 6-8 In some embodiments, the smoke exhaust assembly 4 includes a partition 42 and a smoke exhaust member 41, the partition 42 is installed on the side of the battery monomer 2 facing the opening, the partition 42 is provided with a sub-channel 43 corresponding to the position of the pressure relief mechanism 21, and the exhaust channel 44 includes a first exhaust sub-channel 441 and a second exhaust sub-channel 442 which are in communication with each other; the smoke exhaust member 41 is arranged on the side of the partition 42 away from the battery monomer 2, the partition 42 and the smoke exhaust member 41 cooperate to form the first exhaust sub-channel 441, and the smoke exhaust member 41 is provided with the second exhaust sub-channel 442; the first exhaust sub-channel 441 is in communication with the plurality of sub-channels 43 respectively, and the two ends of the second exhaust sub-channel 442 are in communication with the first exhaust sub-channel 441 and the smoke exhaust port 45 respectively.

[0081] It should be noted that the smoke exhaust assembly 4 can be made of an integral piece, and the directional exhaust of flue gas can be realized by separately adding a smoke exhaust assembly 4. However, such production increases the cost of components, and the added components will occupy the original space, increasing the volume of the battery device 100. Therefore, in order to reduce the impact of the added components on the cost and space, at least part of the original components of the battery device 100 can be used to achieve the effect of the present application. In the embodiment, the isolation member 42 can be a wire harness isolation plate of the battery device 100 itself, which is used to isolate the wire harness or electrical components inside the battery device 100 or the battery module 20. The isolation member 42 and the smoke exhaust member 41 are generally plastic parts. The isolation member 42 is arranged at the top of the battery monomer 2, that is, the side of the battery monomer 2 provided with the pressure relief mechanism 21, or the opening of the accommodating cavity 1. A plurality of sub-passages 43 can be arranged at the position of the isolation member 42 corresponding to the pressure relief mechanism 21. Meanwhile, the isolation member 42 and the smoke exhaust member 41 are provided with recesses at the corresponding positions. When the isolation member 42 and the smoke exhaust member 41 cooperate, the two recesses are spliced to form a first smoke exhaust sub-passage 441. Meanwhile, the smoke exhaust member 41 itself is provided with a second smoke exhaust sub-passage 442. The first smoke exhaust sub-passage 441 communicates the sub-passage 43 and the second smoke exhaust sub-passage 442. The second smoke exhaust sub-passage 442 is provided with a smoke exhaust port 45 at the end away from the first smoke exhaust sub-passage 441. Finally, the flue gas is exhausted from the smoke exhaust port 45.

[0082] By using the original isolation member 42 of the battery device 100, improving the structure of the isolation member 42, and forming the sub-passage 43 and the first smoke exhaust sub-passage 441 by cooperating with the smoke exhaust member 41, the directional smoke exhaust function required by the present application can be realized without adding too many components, which is beneficial to reduce the production cost and reduce the volume of the battery device 100.

[0083] Referring to Figure 6 and Figure 8 In some embodiments, the first smoke exhaust sub-passage 441 includes a first passage section 4411 and a second passage section 4412. The two ends of the second passage section 4412 respectively communicate with the first passage section 4411 and the second smoke exhaust sub-passage 442. The cross-sectional area of the second passage section 4412 shows an increasing trend from the first passage section 4411 to the second smoke exhaust sub-passage 442.

[0084] Here, the cross-sectional area refers to the area of the cross section perpendicular to the flow direction of the flue gas. The first passage section 4411 is the part communicating with each sub-passage 43, mainly used to receive the flue gas of each sub-passage 43. The cross-sectional area of this part is larger than that of each sub-passage 43. The second passage section 4412 is a section for the transition of the first smoke exhaust sub-passage 441 to the second smoke exhaust sub-passage 442. The cross-sectional area of the second passage section 4412 shows an increasing trend from the first passage section 4411 to the second smoke exhaust sub-passage 442, which can be beneficial to exhaust the flue gas into the second smoke exhaust sub-passage 442 as soon as possible, and finally exhaust it from the smoke exhaust port 45.

[0085] By setting the cross-sectional area of ​​the second passage 4412 to increase from the first passage 4411 to the second exhaust sub-channel 442, the rate at which flue gas is discharged into the second exhaust sub-channel 442 can be increased, thereby improving the exhaust efficiency.

[0086] Reference Figure 6 , Figure 9 and Figure 10 In some embodiments, the housing 3 includes two end plates 31, which are disposed on both sides of a plurality of battery cells 2 along a second direction, and the two end plates 31 are respectively provided with a first connection position 46.

[0087] A partition 5 is provided between two adjacent battery cells 2. A second connection position 51 is provided on the side of the partition 5 facing the smoke exhaust component 41. The two ends of the smoke exhaust component 41 are respectively installed at two first connection positions 46, and the smoke exhaust component 41 is installed at the second connection position 51.

[0088] The second direction here is the length direction of the casing 3, which is also the arrangement direction of the multiple battery cells 2. Figure 9 The direction indicated by the middle arrow X. The separator 42 is a component inherent to the battery device 100 itself. It can be installed in the previous manner, such as by threaded connection to the housing 3. For the exhaust component 41, its two ends can be installed on the two end plates 31 of the housing 3. Specifically, each end has a mounting position 402 with mounting holes. A locking element 9 passes through the mounting holes to install the ends onto the short plate, thus fixing the exhaust component 41 at both ends. The locking element 9 can be a bolt or screw. If the exhaust component 41 is long, fixing it only at the ends can easily cause bending or warping in the middle. Therefore, a fixing position can also be provided in the middle of the exhaust component 41. Setting a fixing position on the battery cell 2 can cause significant adverse effects and is also very inconvenient. The separator 5 here can be the heat dissipation plate of the battery cell 2, or it can be called a cooling plate. It is possible to set a second connection position 51 on the separator 5 and install the middle part of the smoke exhaust component 41 on the second connection position 51. This can not only reduce the risk of the smoke exhaust component 41 bending or tilting, but also make the structure more tightly locked through the connection of the end and middle positions, achieving locking in a smaller space, which is suitable for installation in a narrow space.

[0089] By setting fixed positions at both ends and the middle of the smoke exhaust component 41, and fixing the smoke exhaust component 41 to the end plate 31 and the partition plate 5 respectively, the risk of the smoke exhaust component 41 lifting can be reduced, making the surface of the smoke exhaust component 41 flatter, and reducing the space occupied.

[0090] Reference Figures 10-12In some embodiments, the smoke exhaust member 41 is provided with a plurality of connecting seats 47 arranged along a second direction, and the number of the partitions 5 is plural, each of the partitions 5 is provided with a second connecting position 51, the connecting seats 47 and the second connecting positions 51 are equal in number and arranged one-to-one, and the connecting seats 47 and the second connecting positions 51 are connected to mount the smoke exhaust member 41 on the partitions 5.

[0091] The second direction herein is the same as the direction described above, that is, the length direction of the shell or the length direction of the smoke exhaust member 41, that is, the direction in which the plurality of battery monomers 2 are arranged. The connecting seat 47 is connected with the smoke exhaust member 41, and in the case that the length of the smoke exhaust member 41 is relatively long, there may still be a phenomenon of warping when one connecting seat 47 is provided. Therefore, a plurality of connecting seats 47 can be provided on the smoke exhaust member 41 along the length direction, and a plurality of partitions 5 provided on the battery device 100 are used, the second connecting positions 51 are provided on the bottom of the partitions 5, and the connecting seats 47 on the smoke exhaust member 41 are arranged and connected one-to-one with the second connecting positions 51 on the partitions 5, so as to mount the middle position of the smoke exhaust member 41 on the partitions 5 through the plurality of fixing positions. It should be noted that the plurality of partitions 5 are arranged along the second direction, and are arranged alternately and spaced apart with the battery monomers 2.

[0092] By providing the second connecting positions 51 on the plurality of partitions 5 and providing the plurality of connecting seats 47 along the length direction of the smoke exhaust member 41, and connecting the connecting seats 47 and the second connecting positions 51 one-to-one, the smoke exhaust member 41 can be fixed and mounted from a plurality of positions along the length direction of the smoke exhaust member 41, further reducing the risk of bending or warping of the smoke exhaust member 41.

[0093] Referring to Figures 10-12 In some embodiments, each of the connecting seats 47 includes two connecting subseats 471, the two connecting subseats 471 in each of the connecting seats 47 are arranged on two sides of the smoke exhaust member 41 along a third direction, the second connecting position 51 includes two second connecting subpositions 511, each of the connecting subseats 471 and each of the second connecting subpositions 511 are arranged one-to-one, and the second direction is perpendicular to the third direction; the connecting subseat 471 is provided with a first connecting hole, the second connecting subposition 511 is provided with a second connecting hole, and the battery device 100 further includes a fastener 6, the fastener 6 passes through the first connecting hole and the second connecting hole to connect the connecting subseat 471 and the second connecting subposition 511, so as to mount the smoke exhaust member 41 on the partition 5.

[0094] The third direction is as Figure 11The middle position of the smoke exhaust member 41 is generally a long strip-shaped plate, and the long strip-shaped plate cooperates with the partition member 42 to form a first smoke exhaust sub-channel 441. A connecting sub-base 471 can be arranged on each side of the long strip-shaped plate along the width direction. The connecting sub-base 471 is connected to the second connecting sub-position 511 in a one-to-one correspondence through the connecting sub-base 471, which can reduce the risk of deformation or rupture of the first smoke exhaust sub-channel 441 caused by direct connection of the long strip-shaped plate. In addition, a connecting sub-base 471 is arranged on each side of the smoke exhaust member 41 along the width direction, so that the force on the smoke exhaust member 41 is uniform, and the risk of the smoke exhaust member 41 being tilted to one side is reduced. At the same time, the second connecting sub-position 511 and the connecting sub-base 471 can be connected by a fastener 6, which can be a detachable connection such as a bolt or a screw, and of course a fixed connection such as a rivet can also be used.

[0095] By arranging a pair of connecting sub-bases 471 on each side of the smoke exhaust member 41 along the width direction, and mounting each connecting sub-base 471 on the corresponding second connecting sub-position 511 on the partition plate 5 through the fastener 6, the force on the smoke exhaust member 41 is uniform, and the risk of the smoke exhaust member 41 being tilted or bent to one side is reduced.

[0096] Referring to Figure 11 and Figure 12 In some embodiments, a wire passing groove 49 is arranged on the side of the smoke exhaust member 41 away from the accommodation cavity 1. The bottom wall of the wire passing groove 49 is provided with a rib 401 arranged along the extension direction of the wire passing groove 49, and the rib 401 divides the wire passing groove 49 into a first wire groove 491 and a second wire groove 492.

[0097] The side of the smoke exhaust member 41 away from the accommodation cavity 1, that is, the side away from the battery monomer 2, or the top surface of the smoke exhaust member 41. Because the battery module 20 or the battery device 100 needs to be provided with some wire harnesses. Therefore, some recessed wire passing grooves 49 can be arranged on the top surface of the smoke exhaust member 41 for wire passing, which can make the wire harnesses more orderly. Of course, because the wire harnesses can be of various types, in order to facilitate differentiation and reduce the possibility of wiring errors, the rib 401 can be arranged on the wire passing groove 49, and the wire passing groove 49 can include at least a first wire groove 491 and a second wire groove 492 for different wire harnesses. At the same time, the rib 401 can also play a reinforcing role.

[0098] By arranging the wire passing groove 49, a position can be provided for the installation of the wire harnesses. At the same time, the wire passing groove 49 can be divided into at least two by the rib 401, which can realize the classification and arrangement of different wire harnesses. At the same time, the rib 401 can also play a reinforcing role.

[0099] Referring to Figure 13 and Figure 14In some embodiments, the fume exhaust member 41 is provided with a groove on the side facing the battery cell 2, the groove comprising a groove bottom wall and two groove side walls 48 provided on both sides of the groove bottom wall;

[0100] The isolation member 42 is provided with two clamping grooves 421 corresponding to the positions of the two groove side walls 48, which are clamped with the groove side walls 48. The groove and the isolation member 42 are matched to form the fume exhaust channel 44.

[0101] In general terms, the fume exhaust member 41 and the isolation member 42 each form part of the fume exhaust channel 44, and the two are spliced to form a complete fume exhaust channel 44. The isolation member 42 and the fume exhaust member 41 can both be made of plastic, and the isolation member 42 and the fume exhaust member 41 can be matched by clamping. Specifically, the two groove side walls 48 of the groove of the fume exhaust member 41 are clamped in the two clamping grooves 421 of the isolation member 42, respectively. Here, the clamping can be an interference fit, or the groove side walls 48 can have a certain elasticity and be clamped in the clamping grooves 421 by elastic deformation.

[0102] By providing the isolation member 42 with two clamping grooves 421 corresponding to the positions of the two groove side walls 48, the groove of the fume exhaust member 41 and the isolation member 42 are matched to form the fume exhaust channel 44, which facilitates the installation and removal of the fume exhaust member 41 and the isolation member 42.

[0103] Reference is made to Figure 14 In some embodiments, the clamping grooves 421 are also provided with sealing glue 7, which fills the gap between the clamping grooves 421 and the groove side walls 48.

[0104] As described above, the clamping grooves 421 can be clamped with the groove side walls 48 to achieve clamping of the fume exhaust member 41 and the isolation member 42. In fact, the cooperation between the isolation member 42 and the fume exhaust member 41 can not rely entirely on clamping, but can also be assisted by gluing. Specifically, sealing glue 7 can be provided in the clamping groove, and the groove side wall 48 is inserted into the clamping groove 421 and bonded with the sealing glue 7, so that the clamping groove 421 and the groove side wall 48 are connected by gluing. At the same time, there is an important point that the mating surface of the clamping groove 421 and the groove side wall 48 actually constitutes the wall surface of the fume exhaust channel 44. In order to reduce the leakage of flue gas from the gap between the clamping groove 421 and the groove side wall 48, the sealing glue 7 is provided to fill the gap, which also has a sealing effect.

[0105] By providing sealing glue 7 in the clamping groove 421, the gap between the clamping groove 421 and the groove side wall 48 can be filled, reducing flue gas leakage.

[0106] In some embodiments, the clamping grooves 421 and the groove side walls 48 both extend in the second direction.

[0107] The second direction is also the length direction of the shell 3. The clamping groove 421 and the groove side wall 48 are arranged in clamping cooperation, which can achieve better sealing performance of the smoke exhaust channel 44. Therefore, such a structure can be arranged on the entire smoke exhaust channel 44, that is, the clamping groove 421 and the groove side wall 48 extend along the second direction, and the clamping groove 421 is actually a long strip-shaped groove.

[0108] By arranging the clamping groove 421 and the groove side wall 48 to extend along the second direction, clamping cooperation can be achieved in the largest possible range, smoke is not easy to leak from the clamping part, and the sealing performance is improved.

[0109] In some embodiments, the partition 42 and the battery monomer 2 are provided with a gap on one side of the pressure relief mechanism 21; the gap is arranged on the flow path of the sub-channel 43, and the battery device 100 is further provided with a sealing member 8 for filling the gap.

[0110] The partition 42 is arranged on the top surface of the battery monomer 2, that is, the surface provided with the pressure relief mechanism 21. The partition 42 and one side of the battery monomer 2 cannot be completely attached, so that a gap is formed. The smoke exhausted by the pressure relief mechanism 21 can be discharged into the battery module 20 through the gap, which can cause damage to the inside of the battery module 20, which is not desirable for those skilled in the art. Therefore, the sealing member 8 can be arranged in the gap, the sealing member 8 is arranged around the outer periphery of the pressure relief mechanism 21, and the sealing member 8 respectively abuts the top surface of the battery monomer 2 and the bottom surface of the partition 42, which plays a sealing role in filling the gap. In a specific embodiment, the sealing member 8 can be foam.

[0111] By arranging the sealing member 8 for filling the gap between the battery monomer 2 and the partition 42, the risk of smoke leakage can be reduced.

[0112] According to some embodiments of the present application, the present application provides a battery device 100, comprising a shell 3, a plurality of battery monomers 2 and a smoke exhaust assembly 4, the shell 3 is provided with a containing cavity 1, the containing cavity 1 has an opening along one side of the first direction; the plurality of battery monomers 2 are arranged in the containing cavity 1 along the second direction, the second direction is the length direction of the shell 3, the battery monomer 2 is provided with a pressure relief mechanism 21, and the second direction is perpendicular to the first direction; the smoke exhaust assembly 4 is arranged at the opening of the containing cavity 1, the smoke exhaust assembly 4 comprises a shell, a smoke exhaust channel 44 and a plurality of sub-channels 43 arranged in the shell, the plurality of sub-channels 43 are arranged one by one corresponding to the pressure relief mechanism 21 of the plurality of battery monomers 2, the plurality of sub-channels 43 are respectively communicated with the smoke exhaust channel 44, the cross-sectional area of the smoke exhaust channel 44 is greater than the cross-sectional area of each sub-channel 43, and one end of the smoke exhaust channel 44 is arranged as a smoke exhaust port 45 through the shell. Specifically, the smoke exhaust assembly 4 comprises a separation piece 42 and a smoke exhaust piece 41, the separation piece 42 is installed on the side of the battery monomer 2 facing the opening, the smoke exhaust piece 41 is arranged on the side of the separation piece 42 away from the battery monomer 2, the separation piece 42 is provided with a sub-channel 43 corresponding to the position of the pressure relief mechanism 21, the smoke exhaust channel 44 comprises a first smoke exhaust sub-channel 441 and a second smoke exhaust sub-channel 442 which are communicated with each other; the separation piece 42 and the smoke exhaust piece 41 are arranged in cooperation as the first smoke exhaust sub-channel 441, the smoke exhaust piece 41 is provided with the second smoke exhaust sub-channel 442; the first smoke exhaust sub-channel 441 comprises a first passage section 4411 and a second passage section 4412, the first passage section 4411 is respectively communicated with the plurality of sub-channels 43, the two ends of the second passage section 4412 are respectively communicated with the first passage section 4411 and the second smoke exhaust sub-channel 442, the cross-sectional area of the second passage section 4412 shows an increasing trend from the first passage section 4411 to the second smoke exhaust sub-channel 442, and the two ends of the second smoke exhaust sub-channel 442 are respectively communicated with the first smoke exhaust sub-channel 441 and the smoke exhaust port 45. The smoke exhaust port 45 is arranged at one end of the smoke exhaust channel 44 through the shell. Through each sub-channel 43, the smoke exhaust port 45 collects the smoke exhaust of each battery monomer 21, and the smoke exhaust port 45 receives the smoke exhaust of each sub-channel 43 and flows into the smoke exhaust channel 44 communicated with each sub-channel 43, which is equivalent to the smoke exhaust channel 44 collecting the smoke exhaust of each pressure relief mechanism 21 together, and finally uniformly discharging the battery module 20 or the battery device 100, realizing the directional exhaust of the smoke exhaust, the controllable exhaust direction, and reducing the risk of smoke exhaust from the air conditioner into the cab.

[0113] Further, the shell 3 comprises two end plates 31 arranged on two sides of the plurality of battery monomers 2 along the second direction, and the two end plates 31 are respectively provided with a first connecting position 46; a partition plate 5 is arranged between two adjacent battery monomers 2, and the partition plate 5 is provided with a second connecting position 51 on the side facing the smoke exhaust member 41, and the two ends of the smoke exhaust member 41 are respectively mounted on the two first connecting positions 46, and the middle part of the smoke exhaust member 41 is mounted on the second connecting position 51. The smoke exhaust member 41 is provided with a plurality of connecting seats 47 along the second direction, and the smoke exhaust member 41 is connected with the connecting seats 47, each connecting seat 47 comprises two connecting subseats 471, and the two connecting subseats 471 in each connecting seat 47 are respectively arranged on two sides of the smoke exhaust member 41 along a third direction, and the second direction is perpendicular to the third direction; the second connecting position 51 comprises two second connecting subpositions 511, each connecting subseat 471 and each second connecting subposition 511 are arranged one by one, and the second connecting subposition 511 and the second connecting subseat 471 are connected by a fastener 6. By arranging a plurality of fasteners 6 in the middle part of the smoke exhaust member 41, the risk of warping or deformation of the middle part of the smoke exhaust member 41 can be reduced.

[0114] In some specific embodiments, the side of the smoke exhaust member 41 facing the battery monomer 2 is provided with a groove, the groove comprises a groove bottom wall and two groove side walls 48 arranged on both sides of the groove bottom wall; the partition plate 42 is provided with two clamping grooves 421 corresponding to the positions of the two groove side walls 48, and the two clamping grooves 421 are clamped and matched with the groove side walls 48, and the groove and the partition plate 42 are matched and arranged as a smoke exhaust channel 44. The clamping groove 421 is also provided with a sealing glue 7, and the sealing glue 7 fills the gap between the clamping groove 421 and the groove side wall 48; the partition plate 42 is provided with a gap on the side provided with the pressure relief mechanism 21 of the battery monomer 2; the gap is arranged on the flow path of the sub-channel 43, and the battery device 100 is also provided with a sealing member 8 for filling the gap, and the sealing of the smoke exhaust channel 44 can be realized by the sealing glue 7 and the sealing member 8, and the smoke leakage is reduced.

[0115] According to some embodiments of the present application, the present application provides a power utilization device, which comprises a device body and the above-mentioned battery device 100, and the battery device 100 is arranged in the device body. The above-mentioned power utilization device can be a vehicle 1000. Since the power utilization device comprises any one of the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by any one of the above-mentioned technical solutions, which will not be described here.

[0116] The above-mentioned is only an optional embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A battery device, characterized by, The battery device comprises: a housing provided with a receiving cavity having an opening on one side in a first direction; a plurality of battery cells arranged in a second direction in the receiving cavity, the battery cells being provided with pressure relief mechanisms, the second direction being perpendicular to the first direction; and a smoke exhaust assembly provided at the opening of the receiving cavity, the smoke exhaust assembly comprising a housing, a smoke exhaust passage provided in the housing, and a plurality of sub-paths provided one-to-one with the pressure relief mechanisms of the battery cells, the plurality of sub-paths being in communication with the smoke exhaust passage respectively, one end of the smoke exhaust passage being provided as a smoke exhaust port through the housing. The cross-sectional area of the smoke exhaust passage is greater than the cross-sectional area of each sub-path.

2. The battery device of claim 1, wherein The cross-sectional area is the area of a section perpendicular to the fluid flow direction. The smoke exhaust assembly comprises a partition and a smoke exhaust member, the partition being mounted on the side of the battery cells facing the opening, the partition being provided with the sub-paths corresponding to the positions of the pressure relief mechanisms, the smoke exhaust passage comprising a first smoke exhaust sub-path and a second smoke exhaust sub-path; 3. The battery device of claim 1, wherein the smoke exhaust member being provided on the side of the partition away from the battery cells, the partition and the smoke exhaust member cooperating to form the first smoke exhaust sub-path, the smoke exhaust member being provided with the second smoke exhaust sub-path; the first smoke exhaust sub-path being in communication with the plurality of sub-paths respectively, and the two ends of the second smoke exhaust sub-path being in communication with the first smoke exhaust sub-path and the smoke exhaust port respectively. The first smoke exhaust sub-path comprises a first passage segment and a second passage segment, the two ends of the second passage segment being in communication with the first passage segment and the second smoke exhaust sub-path respectively, and the cross-sectional area of the second passage segment showing an increasing trend from the first passage segment to the second smoke exhaust sub-path.

4. The battery device of claim 3, wherein The housing comprises two end plates provided on both sides of the plurality of battery cells in the first direction, and the two end plates are respectively provided with first connection sites; 5. The battery device of claim 3, wherein a partition is provided between adjacent two battery cells, the side of the partition facing the smoke exhaust member is provided with a second connection site, the two ends of the smoke exhaust member are respectively mounted on the two first connection sites, and the smoke exhaust member is mounted on the second connection site. The smoke exhaust member is provided with a plurality of connection seats arranged in the second direction, the number of the partitions is a plurality, each of the partitions is provided with the second connection site, the number of the connection seats is equal to that of the second connection sites and the connection seats and the second connection sites are provided one-to-one, and the connection seats are connected with the second connection sites.

6. The battery device of claim 5, wherein Each of the connection seats comprises two connection sub-seats, the two connection sub-seats in each of the connection seats are respectively provided on both sides of the smoke exhaust member in a third direction, the second connection site comprises two second connection sub-sites, and each of the connection sub-seats and each of the second connection sub-sites are provided one-to-one; the second direction is perpendicular to the third direction; 7. The battery device of claim 6, wherein the first connection hole is provided on the connection sub-seat, the second connection hole is provided on the second connection sub-site, and the battery device further comprises a fastener connecting the connection sub-seat and the second connection sub-site through the first connection hole and the second connection hole. ​ 8. The battery device according to any one of claims 3 to 7, wherein The side of the smoke exhaust member facing the battery monomer is provided with a groove, the groove comprises a groove bottom wall and two groove side walls arranged on both sides of the groove bottom wall; The isolating member is provided with two clamping grooves corresponding to the positions of the two groove side walls, the clamping grooves are clamped with the groove side walls respectively, and the groove and the isolating member are matched to form the smoke exhaust channel.

9. The battery device of claim 8, wherein, The clamping groove is further provided with sealing glue, the sealing glue fills the gap between the clamping groove and the groove side wall; And / or, the clamping groove and the groove side wall extend along the first direction.

10. The battery device according to any one of claims 3 to 7, wherein The side of the smoke exhaust member away from the accommodating cavity is provided with a wire slot, the bottom wall of the wire slot is provided with a rib along the extension direction of the wire slot, and the rib separates the wire slot into a first wire slot and a second wire slot.

11. The battery device of any one of claims 3 to 7, wherein, The side of the isolating member provided with the pressure relief mechanism is provided with a gap; The gap is arranged on the flow path of the sub-channel, and the battery device is further provided with a sealing member for filling the gap.

12. An electrical device, characterized by The electric equipment comprises an equipment body and the battery device of any one of claims 1-11, and the battery device is arranged in the equipment body.

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